Outlook connector performance vs Zimbra Desktop

Hello all,

I'm new to the forums, been spending the past couple days just browsing and reading.

We are in the process of evaluating a new email solution for our office. We currently use Kerio Connect, and it's decent, however, I believe the Kerio Outlook Connector is buggy, as we seem to have quite a few calendaring issues.

We are looking at migrating over to Zimbra, the question I have for you is, how does the performance of the Zimbra Outlook connector compare to the native Zimbra Desktop client?

Are there any known/reported connector issues, or any calendar issues for that matter. One of the big issues we have is:

User A schedules a meeting and invites User B, C, D, E.

User A moves the meeting date/time and sends out an update.

On users B, C, D, and E, the event will not move, it will copy to the new date/time, so those users will now have 2 events on their calendar for different date/times. Kerio can't figure out what's going on, the reason for switching email servers.